The VN-4000 series coin changer were made for only a couple years in the late 1990s and the early 2000s. They were a temporary model used to compete with Coinco until a more permanent style could be produced. The "temporary" style turned out to be a huge success, and while they are no longer made by MEI, they are still being used by operators and rebuilt by the thousands. The VN-4000 series is available in 4 different styles. 12 pin 110 volt, 12 pin 24 volt, 15 pin 24 volt, and MDB. The VN-4510 is the 24 volt MDB version of the 4000 series changer.
MEI holds the world's largest installed base of unattended payment systems, handling over 2 billion transactions per week in more than 100 countries. The company developed the first electronic coin mechanism in the 1960s, followed by the first electronic non-contact bill validator, and more recently its credit card capability and vending management solutions software.
MEI payment systems' technology is considered the most reliable choice in hundreds of real-world applications and has earned the best performance rating in the market. Through its commitment to quality and innovation, MEI continues to provide the highest reliability and state-of-the-art products for the vending, gaming, amusement, transportation, retail and kiosk market